BAK Industries Truck Bed Cover Features: State Of The Art Security Easy Clamp On Installation Locks In Full Position Flush Aerodynamic Design The Worlds Lowest Profile Cover Protects Against The Elements Allows 100% Access To Truck Bed w/o Removing Cover Carry Full Load w/Out Removing Cover Height: 68.00 Width: 23.00 Length: 8.00 Fitment: 2014/GMC/Sierra 3500 HD/WT Standard Cab Pickup 2-Door/6.6L 6599CC 403Cu. In. V8 DIESEL OHV Turbocharged::Bed Length = 78.8, Bed Side = Fleetside, Dually Bed^^2014/GMC/Sierra 3500 HD/WT Standard Cab Pickup 2-Door/6.0L 5967CC 364Cu. In. V8 GAS OHV Naturally Aspirated::Bed Length = 78.8, Bed Side = Fleetside, Dually Bed^^2014/GMC/Sierra 3500 HD/WT Standard Cab Pickup 2-Door/6.0L 5967CC 364Cu. In. V8 FLEX OHV Naturally Aspirated::Bed Length = 78.8, Bed Side = Fleetside, Dually Bed^^2014/GMC/Sierra 3500 HD/...